CN108160840B - Bar centering guide device of straightener - Google Patents
Bar centering guide device of straightener Download PDFInfo
- Publication number
- CN108160840B CN108160840B CN201711473271.9A CN201711473271A CN108160840B CN 108160840 B CN108160840 B CN 108160840B CN 201711473271 A CN201711473271 A CN 201711473271A CN 108160840 B CN108160840 B CN 108160840B
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- Prior art keywords
- guide plate
- cylinder body
- locking
- cylinder
- plate door
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- 230000000670 limiting effect Effects 0.000 claims description 9
- 238000004519 manufacturing process Methods 0.000 abstract description 6
- 238000012423 maintenance Methods 0.000 abstract description 5
- 238000007789 sealing Methods 0.000 abstract description 2
- 239000003921 oil Substances 0.000 description 9
- 238000000034 method Methods 0.000 description 6
- 238000005452 bending Methods 0.000 description 2
- 230000007547 defect Effects 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000010008 shearing Methods 0.000 description 2
- 230000035939 shock Effects 0.000 description 2
- 230000001360 synchronised effect Effects 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 1
- 238000005422 blasting Methods 0.000 description 1
- 230000003139 buffering effect Effects 0.000 description 1
- 239000008358 core component Substances 0.000 description 1
- 230000000593 degrading effect Effects 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 238000007730 finishing process Methods 0.000 description 1
- 239000010720 hydraulic oil Substances 0.000 description 1
- 239000013072 incoming material Substances 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000003754 machining Methods 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 230000002441 reversible effect Effects 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 238000005303 weighing Methods 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D43/00—Feeding, positioning or storing devices combined with, or arranged in, or specially adapted for use in connection with, apparatus for working or processing sheet metal, metal tubes or metal profiles; Associations therewith of cutting devices
- B21D43/006—Feeding elongated articles, such as tubes, bars, or profiles
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D3/00—Straightening or restoring form of metal rods, metal tubes, metal profiles, or specific articles made therefrom, whether or not in combination with sheet metal parts
- B21D3/02—Straightening or restoring form of metal rods, metal tubes, metal profiles, or specific articles made therefrom, whether or not in combination with sheet metal parts by rollers
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Wire Processing (AREA)
- Automatic Assembly (AREA)
Abstract
The utility model provides a straightener rod centering guider, is including two rod spacing units of symmetry setting in the roll gap both sides in the constitution, every rod spacing unit includes baffle door, guide strip, guide plate and two locking cylinders, the lower part of baffle door rotates with the straightener base through the pivot to be connected, guide strip keeps off at the roll gap lateral part and is connected with the baffle door through the guide plate, and two locking cylinders are located the left and right sides upper portion of baffle door respectively, and the axis of the two is parallel with the pivot of baffle door, and the piston rod of every locking cylinder is fixed on straightener integral frame, and the cylinder body top of locking cylinder is on the baffle door. According to the invention, the guide plate door is pressed by the cylinder body of the locking cylinder, and the guide plate door only slightly vibrates when impacted by the cylinder body due to the large mass of the cylinder body, so that the sealing of the locking cylinder is not easily damaged, thus oil leakage faults are reduced, the operation reliability of the centering guide device is improved, the maintenance cost of equipment is reduced, and the normal production is ensured.
Description
Technical Field
The invention relates to a device for centering and guiding a bar used on a bar straightener, and belongs to the technical field of metal bar machining.
Background
The process flow of the bar finishing line is as follows: feeding, straightening, chamfering, shot blasting, surface and internal flaw detection, collection, bundling, weighing and warehousing. The straightener is used as an important device of the whole finishing line for the first finishing process, and plays an important role in ensuring the straightness of the bar, facilitating the treatment of the subsequent process and improving the treatment precision of the subsequent process. The two-roller straightening machine is a device which uses concave and convex straightening rollers of a hyperbolic roller shape as core components and utilizes the principle of three-point reverse bending to straighten round bars, has high straightening precision, but the straightening rollers do not have centering guiding function, and the two sides of a roller gap are required to be relied on to be provided with centering guiding devices to guide the straightened round bars and limit the transverse movement of the straightened round bars, so that the round bars always pass through the straightening machine along a proper straightening path, and the aim of straightening the round bars is fulfilled.
The centering and guiding device of the two-roller straightening machine generally comprises two bar limiting units symmetrically arranged on two sides of a roll gap, each bar limiting unit comprises a guide plate door, a guide strip, a guide plate and two locking cylinders, the lower part of the guide plate door is rotationally connected with a base of the straightening machine through a horizontal rotating shaft, the guide strip is blocked on the side part of the roll gap and is connected with the guide plate door through the guide plate, the two locking cylinders are respectively positioned on the upper parts of the left side and the right side of the guide plate door, the axes of the two locking cylinders are parallel to the rotating shaft of the guide plate door, the cylinder body of each locking cylinder is fixed on the integral frame of the straightening machine, and the piston rod of each locking cylinder is propped against the guide plate door. The existing centering guide device has the following defects:
1. the cylinder body of the locking cylinder is fixed on the integral frame of the straightener, the piston rod is propped against the guide plate door, and because the size of the piston rod is small and the weight is light, when the guide plate door is impacted greatly in the operation process of the straightener, the piston rod can vibrate violently along with the guide plate door easily, so that the locking cylinder leaks oil, the maintenance cost of equipment is increased, and the normal operation of production is seriously influenced.
2. The piston rods of the two locking cylinders are respectively pressed against the guide plate door from the left side and the right side, the contact surface of the piston rods and the guide plate door is a plane perpendicular to the axis of the piston rods, the guide plate door is prevented from swinging outwards by simply relying on the friction force between the piston rods and the guide plate door, the guide plate door cannot be effectively locked, especially when large-size bars with large curvature and high yield strength of incoming materials are produced, the vibration and activity interval of the guide plate door is greatly increased, and the bar straightening precision is greatly reduced, so that the production requirement cannot be met.
Disclosure of Invention
The invention aims at overcoming the defects of the prior art and provides a bar centering and guiding device of a straightener, so as to improve the running reliability of equipment, reduce the maintenance cost and ensure the normal running of production.
The invention is realized by the following technical scheme:
the utility model provides a straightener rod centering guider, is including two rod spacing units of symmetry setting in the roll gap both sides in the constitution, every rod spacing unit includes baffle door, guide strip, guide plate and two locking cylinders, the lower part of baffle door rotates with the straightener base through the pivot to be connected, guide strip keeps off at the roll gap lateral part and is connected with the baffle door through the guide plate, and two locking cylinders are located the left and right sides upper portion of baffle door respectively, and the axis of the two is parallel with the pivot of baffle door, and the piston rod of every locking cylinder is fixed on straightener integral frame, and the cylinder body top of locking cylinder is on the baffle door.
Above-mentioned straightener rod centering guider, the locking jar includes cylinder body and piston rod, the cylinder body is cylindricly, and its one end top is on the baffle door, and the other end is equipped with the blind hole by the cylinder cap shutoff, the one end of piston rod is fixed on the whole frame of straightener, and the other end penetrates the blind hole of cylinder body inside and expand into the piston head through the centre bore of cylinder cap, and two oil pocket that the inner chamber of this piston head with the blind hole on the cylinder body was cut apart into, and every oil pocket is connected with hydraulic system's oil pipe through setting up an oil duct in the piston rod.
According to the bar centering and guiding device of the straightener, the cylinder body of the locking cylinder is matched with the guide plate door through the mo-type taper locking head.
The bar centering and guiding device of the straightener comprises a hydraulic support rod, wherein two ends of the hydraulic support rod are respectively connected with the straightener base and the guide plate door in a rotating way.
According to the bar centering and guiding device of the straightener, the guide sleeve is sleeved outside the cylinder body of the locking cylinder, and the guide sleeve is fixed on the integral frame of the straightener and is in sliding connection with the cylinder body.
According to the bar centering and guiding device of the straightener, the positioning block is fixed on the guiding sleeve, and one part of the positioning block is clamped into the axial positioning groove on the cylinder body.
According to the invention, the guide plate door is pressed by the cylinder body of the locking cylinder, and the guide plate door only slightly vibrates when impacted by the cylinder body due to the large mass of the cylinder body, so that the sealing of the locking cylinder is not easily damaged, thus oil leakage faults are reduced, the operation reliability of the centering guide device is improved, the maintenance cost of equipment is reduced, and the normal production is ensured.
According to the invention, an oil pipe on the locking cylinder body is omitted, and a hydraulic oil duct arranged in the piston rod is replaced, so that the volume of the cylinder body can be effectively reduced, and the locking cylinder can be smoothly installed in the original limited space.
According to the invention, the guide plate door is locked by the Moire taper locking head, the locking surface between the locking cylinder and the guide plate door is a Mo Shi taper contact surface, the original friction force is changed into a shearing force, the locking force is greatly increased, and the vibration and the movable interval of the guide plate door are reduced, so that the straightening precision of bars is improved.
Drawings
The invention is further described below with reference to the accompanying drawings.
FIG. 1 is a schematic installation view of the present invention;
FIG. 2 is a left side view of FIG. 1;
FIG. 3 is a top view of FIG. 1;
FIG. 4 is an enlarged view of a portion of FIG. 3;
fig. 5 is a schematic structural view of the locking cylinder.
The figures are labeled as follows: 1. the straightening machine comprises an upper straightening roller (concave straightening roller), 2, a locking cylinder, 3, a bar, 4, a straightening machine prestress rack, 5, a locking cylinder mounting base, 6, guide bars, 7, a lower straightening roller (convex straightening roller), 8, a straightening machine prestress upright post, 9, a guide plate, 10, a guide plate door, 11, a hydraulic support rod, 12, a rotating shaft, 13, a mo-type taper locking head, 14, a piston rod, 15, a cylinder body, 16, a cylinder cover, 17, an oil duct, 18, a guide sleeve, 19 and a positioning block.
Detailed Description
Referring to FIGS. 1 to 5, the leveler body (without the main motor and the drive shaft) includes: the straightening machine comprises a straightening machine integral frame (comprising a straightening machine base, a straightening machine prestress rack 4 and a straightening machine prestress upright post 8), an upper straightening roller 1, a lower straightening roller 7 and a bar centering guide device, wherein the bar centering guide device mainly comprises two bar limiting units, and each bar limiting unit comprises a locking cylinder 2, a guide strip 6, a guide plate 9, a guide plate door 10, a hydraulic support rod 11, a rotating shaft 12, a guide sleeve 18 and a positioning block 19. The guide strip 6 is fixedly arranged at the innermost side of the guide plate 9, and can be replaced, and the guide strip 6 can be contacted with the bar to ensure the centering of the bar.
The two-roller straightening machine is provided with an upper straightening roller and a lower straightening roller, the upper straightening roller 1 is a concave roller, the lower straightening roller 7 is a convex roller, the processed bar 3 passes through the roller gap along the length direction of the roller gap between the two straightening rollers, and the bar can be extruded to one side when being subjected to bending force of the straightening rollers due to the fact that the straightening rollers have no directional capability, the bar is required to be constrained in the roller gap by centering action of two bar limiting units, and the bar is straightened by the hyperbolic roller-shaped straightening rollers, so that the optimal straightening effect is achieved. The larger the bar standard straightened by the straightener, the larger the eccentric force generated during straightening, and the larger the impact force on the guide bar and the guide plate door, the guide plate door 10 must be reliably locked to ensure that the bar is not extruded out of the roll gap.
The straightener is provided with a stepless pressurizing system, a hydraulic servo system, a synchronous mechanism and an overpressure and pressure loss protection system. Four locking cylinders 2 are respectively fixed on the prestressed upright posts of the four straightening machines, and each guide plate door is respectively locked by the left locking cylinder and the right locking cylinder. The two-roller straightener comprises four pre-stressing upright posts and a straightener pre-stressing rack formed by welding steel plates, wherein the straightener pre-stressing rack comprises a guide plate door fixing rotating shaft which is fixed on a straightener base.
Compared with the traditional bar centering guide device, the invention has the following characteristics:
1. the novel Mo Shi taper contact surface is adopted between the locking cylinder 2 and the guide plate door 10, the original friction force is converted into the shearing force, the locking force is greatly increased, the locking of the guide plate door is effectively ensured, the guide plate door has enough shock resistance, the vibration amplitude of the guide plate door is reduced, and the centering accuracy in the bar straightening process is ensured.
2. On the basis of unchanged size of the original assembly space, a new design thought is provided, the hydraulic locking cylinder is fixed by the original cylinder body, the piston rod is moved to be fixed by the piston rod, the cylinder body is moved, and the diameter of the cylinder body is increased to the greatest extent, so that the shock resistance of the locking cylinder is increased, frequent occurrence of oil leakage faults is avoided, the service life of the locking cylinder is prolonged, the maintenance cost of equipment is reduced, and normal production is ensured.
3. Through original design, the hydraulic pipeline is installed outside the hydraulic cylinder, through holes are drilled in the piston rod instead, and an external hydraulic system is connected from the end part of the piston rod, which is equivalent to arranging the hydraulic pipeline inside the piston rod, greatly buffering and degrading vibration transmitted to a pipeline interface, improving reliability and simultaneously saving external assembly space.
The working process of the invention is as follows:
after the system pressure is boosted by the boosting system, the system pressure enters the locking cylinder 2, the cylinder body of the locking cylinder 2 moves towards the guide plate door, the mo-type taper locking head 13 at the end part of the locking cylinder 2 is propped against the locking surface of the guide plate door 10, so that the guide plate door 10 cannot swing outwards, at the moment, the guide strips 6 connected with the guide plate door 10 through the guide plate 9 cannot move outwards, and the limiting effect of the guide strips 6 of the two bar limiting units can ensure that bars are always positioned in the roll gap between the upper straightening roll 1 and the lower straightening roll 7, so that the straightening precision is improved. The hydraulic system utilizes the synchronous valve to ensure that the movements of the locking cylinders are consistent.
When the guide plate door is required to be opened to adjust the guide plate 9 and the guide strip 6, the hydraulic system is reversed, the resetting system is started, the cylinder body of the locking cylinder 2 moves reversely, the Moire taper locking head 13 leaves the guide plate door 10, the guide plate door is unlocked, and the guide plate door can be opened at the moment.
Claims (3)
1. The bar centering and guiding device of the straightening machine is characterized by comprising two bar limiting units symmetrically arranged on two sides of a roll gap, wherein each bar limiting unit comprises a guide plate door (10), guide strips (6), guide plates (9) and two locking cylinders (2), the lower part of the guide plate door (10) is rotationally connected with a base of the straightening machine through a rotating shaft (12), the guide strips (6) are blocked on the side part of the roll gap and are connected with the guide plate door (10) through the guide plates (9), the two locking cylinders (2) are respectively positioned on the upper parts of the left side and the right side of the guide plate door (10), the axes of the two locking cylinders are parallel to the rotating shaft (12) of the guide plate door (10), a piston rod (14) of each locking cylinder (2) is fixed on the integral frame of the straightening machine, and a guide plate (15) of each locking cylinder (2) is propped against the guide plate door (10);
the cylinder body (15) of the locking cylinder (2) is matched with the guide plate door (10) through a mo-type taper locking head (13);
a guide sleeve (18) is sleeved outside the cylinder body (15) of the locking cylinder (2), and the guide sleeve (18) is fixed on the integral frame of the straightener and is in sliding connection with the cylinder body (15);
a positioning block (19) is fixed on the guide sleeve (18), and one part of the positioning block (19) is clamped into an axial positioning groove on the cylinder body (15).
2. The rod centering and guiding device of the straightening machine according to claim 1, characterized in that the locking cylinder (2) comprises a cylinder body (15) and a piston rod (14), the cylinder body (15) is cylindrical, one end of the cylinder body is propped against the guide plate door (10), the other end of the cylinder body is provided with a blind hole blocked by a cylinder cover (16), one end of the piston rod (14) is fixed on the integral frame of the straightening machine, the other end of the piston rod penetrates into the blind hole of the cylinder body (15) through a central hole of the cylinder cover (16) and expands into a piston head, the piston head divides an inner cavity of the blind hole on the cylinder body (15) into two oil cavities, and each oil cavity is connected with an oil pipe of a hydraulic system through an oil duct (17) arranged in the piston rod (14).
3. The bar centering and guiding device of the straightening machine according to claim 2, further comprising a hydraulic supporting rod (11), wherein two ends of the hydraulic supporting rod (11) are respectively and rotatably connected with the base of the straightening machine and the guide plate door (10).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711473271.9A CN108160840B (en) | 2017-12-29 | 2017-12-29 | Bar centering guide device of straightener |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711473271.9A CN108160840B (en) | 2017-12-29 | 2017-12-29 | Bar centering guide device of straightener |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN108160840A CN108160840A (en) | 2018-06-15 |
| CN108160840B true CN108160840B (en) | 2023-11-21 |
Family
ID=62520086
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201711473271.9A Active CN108160840B (en) | 2017-12-29 | 2017-12-29 | Bar centering guide device of straightener |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108160840B (en) |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109500143A (en) * | 2018-11-24 | 2019-03-22 | 山西太钢不锈钢股份有限公司 | A kind of application method of acid tandem rolling straightener |
| CN111438227B (en) * | 2020-04-01 | 2022-04-26 | 首钢京唐钢铁联合有限责任公司 | Method for adjusting frame of thermal straightening machine |
| CN111534752A (en) * | 2020-05-21 | 2020-08-14 | 东莞市万欣金属制品有限公司 | Production method for improving surface hardness of 303F stainless steel bar |
| CN112096685A (en) * | 2020-08-06 | 2020-12-18 | 宝钢特钢韶关有限公司 | Bolt jar and straightener |
| CN112536336B (en) * | 2020-12-01 | 2022-11-29 | 宝武杰富意特殊钢有限公司 | Guide plate adjusting mechanism and two-roller straightener |
Citations (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3533257A (en) * | 1967-06-09 | 1970-10-13 | Redman Tools Holding Ltd | Machines for straightening bars or tubes |
| JPH0466227A (en) * | 1990-06-29 | 1992-03-02 | Daido Kikai Seisakusho:Kk | Device for attaching, removing and fixing guide bar facing in rod and tube correcting machine |
| JP2005144502A (en) * | 2003-11-17 | 2005-06-09 | Sanyo Special Steel Co Ltd | Method for changing guide bar of two-roll straightener |
| JP2009090375A (en) * | 2008-12-15 | 2009-04-30 | Daido Machinery Ltd | Straightening machine |
| JP2009107023A (en) * | 2008-12-15 | 2009-05-21 | Daido Machinery Ltd | Straightening apparatus and method for carrying-in and carrying-out straightening roll |
| CN201565475U (en) * | 2009-12-22 | 2010-09-01 | 太原重工股份有限公司 | Online guide plate replacing device of puncher |
| CN101927262A (en) * | 2009-12-17 | 2010-12-29 | 天津津重重工机器设备制造有限公司 | Rack locking oil cylinder of bar mill |
| CN102705291A (en) * | 2012-05-28 | 2012-10-03 | 湘煤立达矿山装备股份有限公司 | Oil cylinder capable of passing oil by piston rod |
| CN204953584U (en) * | 2015-09-18 | 2016-01-13 | 西安精整冶金设备有限公司 | Two roller straightening machine baffle door locking device |
| CN204974723U (en) * | 2015-06-26 | 2016-01-20 | 中冶南方工程技术有限公司 | Mkw mill locking device and mkw mill |
| CN206253487U (en) * | 2016-10-28 | 2017-06-16 | 宝钢特钢韶关有限公司 | A kind of new two-roll reeler high pressure clamping device |
| CN207770653U (en) * | 2017-12-29 | 2018-08-28 | 石家庄钢铁有限责任公司 | A kind of balance locking device |
-
2017
- 2017-12-29 CN CN201711473271.9A patent/CN108160840B/en active Active
Patent Citations (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3533257A (en) * | 1967-06-09 | 1970-10-13 | Redman Tools Holding Ltd | Machines for straightening bars or tubes |
| JPH0466227A (en) * | 1990-06-29 | 1992-03-02 | Daido Kikai Seisakusho:Kk | Device for attaching, removing and fixing guide bar facing in rod and tube correcting machine |
| JP2005144502A (en) * | 2003-11-17 | 2005-06-09 | Sanyo Special Steel Co Ltd | Method for changing guide bar of two-roll straightener |
| JP2009090375A (en) * | 2008-12-15 | 2009-04-30 | Daido Machinery Ltd | Straightening machine |
| JP2009107023A (en) * | 2008-12-15 | 2009-05-21 | Daido Machinery Ltd | Straightening apparatus and method for carrying-in and carrying-out straightening roll |
| CN101927262A (en) * | 2009-12-17 | 2010-12-29 | 天津津重重工机器设备制造有限公司 | Rack locking oil cylinder of bar mill |
| CN201565475U (en) * | 2009-12-22 | 2010-09-01 | 太原重工股份有限公司 | Online guide plate replacing device of puncher |
| CN102705291A (en) * | 2012-05-28 | 2012-10-03 | 湘煤立达矿山装备股份有限公司 | Oil cylinder capable of passing oil by piston rod |
| CN204974723U (en) * | 2015-06-26 | 2016-01-20 | 中冶南方工程技术有限公司 | Mkw mill locking device and mkw mill |
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| CN207770653U (en) * | 2017-12-29 | 2018-08-28 | 石家庄钢铁有限责任公司 | A kind of balance locking device |
Also Published As
| Publication number | Publication date |
|---|---|
| CN108160840A (en) | 2018-06-15 |
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